Codman's 1926 report from the American College of Surgeons Registry of Bone Sarcoma. Part I lays out 25 diagnostic criteria for osteogenic sarcoma across history, examination, X-ray, microscopy, and general categories. Part II analyzes the only 13 verifiable 5-year cures of osteogenic sarcoma the registry could assemble.
This paper is the origin point of systematic bone tumor classification and the 'end-result' philosophy that underlies modern outcomes tracking and tumor registries.
The practical lesson for a resident is that diagnosis must be nailed down before you argue about treatment. Codman found that nearly half of lesions labeled sarcoma were something else entirely, a warning that still applies to the aggressive-looking bone lesion on a plain film.
Several of his criteria remain testable board facts: osteogenic sarcoma occurs in healthy patients under 50, favors the femur and tibia around the knee, and shows a mixed osteolytic-osteoblastic pattern with combined medullary and subperiosteal involvement.
His clinical mental model still works: a purely lytic lesion points toward metastasis, a purely blastic one toward a benign process, and a diaphyseal lesion toward Ewing's or myeloma rather than osteosarcoma. He also documented that Paget's disease carries a 12-14% sarcoma risk, an association residents are still tested on.
Codman's 1926 report from the American College of Surgeons Registry of Bone Sarcoma. Part I lays out 25 diagnostic criteria for osteogenic sarcoma across history, examination, X-ray, microscopy, and general categories. Part II analyzes the only 13 verifiable 5-year cures of osteogenic sarcoma the registry could assemble.
This paper is the origin point of systematic bone tumor classification and the 'end-result' philosophy that underlies modern outcomes tracking and tumor registries.
The practical lesson for a resident is that diagnosis must be nailed down before you argue about treatment. Codman found that nearly half of lesions labeled sarcoma were something else entirely, a warning that still applies to the aggressive-looking bone lesion on a plain film.
Several of his criteria remain testable board facts: osteogenic sarcoma occurs in healthy patients under 50, favors the femur and tibia around the knee, and shows a mixed osteolytic-osteoblastic pattern with combined medullary and subperiosteal involvement.
His clinical mental model still works: a purely lytic lesion points toward metastasis, a purely blastic one toward a benign process, and a diaphyseal lesion toward Ewing's or myeloma rather than osteosarcoma. He also documented that Paget's disease carries a 12-14% sarcoma risk, an association residents are still tested on.